Here is screen shot of my recent flag history,
As we can see that after handling of flag by moderator each flag is showing the time when I flagged that post. But in case of flag like "Spam" or "It is not welcome in our community" it doesn't shows the flagged time. So my question, Is this status-bydesign or another reason?
From the him056's comment If you hover mouse icon on "helpful" or "decline/disputed" text it shows same timestamp in tooltip, while in case of "Spam" flag it doesn't show any tooltip.